The stimulated Raman effect provides an efficient means for producing coherent optical signals throughout the visible and infrared portion of the spectrum using a single laser source as exciter and either a crystal or a cell containing a gas or liquid as the target. The Raman-shifted output retains the high-intensity well-collimated monochromatic properties of the original laser. The objectives of the research program presented in the report were to investigate those aspects of the Raman effect relevant to the possibility of constructing a tunable Raman laser in which continuous tuning over tens of angstroms could be expected.
This post was published on February 27, 2020 1:11 pm
In September 2024, a Freedom of Information Act (FOIA) request was filed with NASA seeking…
Background Welcome to the FBI Files on Historical Figures & Groups archive at The Black…
A new release of Department of Defense (DoD) emails obtained through the Freedom of Information…
Newly released Department of Defense records reveal the prolonged and often frustrating prepublication review process…
Newly released Federal Aviation Administration (FAA) documents obtained by The Black Vault under FOIA case…
Background The Central Intelligence Agency was created in 1947 with the signing of the National…